Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
200029goodexcellent31excellent
190036goodexcellent41excellent
180024goodexcellent21excellent
170016excellentexcellent21excellent
16008excellentexcellent11excellent
15007excellentexcellent11excellent
14005excellentexcellent11excellent
130011excellentexcellent21excellent
120014excellentexcellent11excellent
11008excellentexcellent11excellent
100015excellentexcellent11excellent
090024goodexcellent11excellent
080015excellentexcellent11excellent
07009excellentexcellent11excellent
060026goodexcellent31excellent
050022goodexcellent21excellent
040013excellentexcellent11excellent
030011excellentexcellent11excellent
020014excellentexcellent11excellent
01008excellentexcellent21excellent
000011excellentexcellent21excellent
230033goodexcellent51excellent
220044goodexcellent71excellent
210032goodexcellent41excellent